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논문 기본 정보

자료유형
학술저널
저자정보
Lekha. U. Bakmeedeniya (University of Peradeniya) S.D.G.S.P. Gunawardane (University of Peradeniya) Byung-Ha Kim (Korea Maritime & Ocean University) Young-Ho Lee (Korea Maritime & Ocean University)
저널정보
한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제44권 제4호
발행연도
2020.8
수록면
338 - 343 (6page)
DOI
10.5916/jamet.2020.44.4.338

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“Pendulor,” a wave energy device, is the first notable oscillating wave surge converter (OWSC), which consists of a top hinged flap that oscillates in a bounded caisson. From the sea tests conducted by the Muroran Institute of Technology, Japan, it is proven to present 40%–50% energy conversion efficiency. Nevertheless, there are unresolved issues, particularly regarding the physical configurations of the caisson and the flap combination when adopting the OWSC under different sea conditions. The main objective of this research is to investigate the effect of the parametric interactions of caisson configurations on the conversion efficiency. This paper describes the test facility arrangements and the obtained model test results, particularly for the primary energy conversion efficiency of the device for selected configurations. Three-dimensional model tests were conducted in a wave tank to investigate the behavior of a straight caisson configuration using a 1/40th scale following the Froudian scaling for regular waves. Tests were conducted for the conventional caisson arrangement (flap without a gap in the caisson) and for a flap with a bottom gap. The results obtained for the power extraction for different combinations of the damping torque and the wave frequencies were analyzed to compare the power capture for the above caisson configurations. The discovery of the “pumping mode,” which enhances the power capture, is discussed and was verified in this study.

목차

Abstract
1. Introduction
2. Modelling flap-type WEC with bottom gap
3. Wave tank testing
4. Results and discussion
5. Conclusions
References

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